TL;DR
This review explores how frustration in magnetic systems influences quantum criticality, highlighting theoretical ideas and recent experimental findings in correlated-electron materials, with implications for exotic phases and multi-critical points.
Contribution
It provides a comprehensive overview of the interplay between frustrated magnetism and quantum critical phenomena, integrating theoretical concepts with recent experimental insights.
Findings
Frustration can induce exotic quantum phases and critical points.
Competing phases in frustrated systems lead to multi-criticality.
Experimental evidence supports theoretical models of frustration-induced phenomena.
Abstract
This review article is devoted to the interplay between frustrated magnetism and quantum critical phenomena, covering both theoretical concepts and ideas as well as recent experimental developments in correlated-electron materials. The first part deals with local-moment magnetism in Mott insulators and the second part with frustration in metallic systems. In both cases, frustration can either induce exotic phases accompanied by exotic quantum critical points or lead to conventional ordering with unconventional crossover phenomena. In addition, the competition of multiple phases inherent to frustrated systems can lead to multi-criticality.
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